Golf Cart Motor overheating

About powering boats with electricity

Moderator: BruceDow

Bob
Posts: 1
Joined: Sat Mar 26, 2011 10:16 am

Golf Cart Motor overheating

Postby Bob » Sat Mar 26, 2011 11:01 am

I completed a Lo Voltage in Nov.2010. It is powered by a 3 hp 36 volt golf cart motor. It is a neat little boat but after about 45 minutes of operation the motor is so hot that it cuts out. I have mounted a blower to circulate more air over it and added some makeshift cooling fins but didn't help much. Does anybody with a LO Voltage or similar installation have this problem? Any suggestions?
Bob

User avatar
Bill Edmundson
Posts: 10727
Joined: Wed Nov 23, 2005 6:45 am
Location: Birmingham, AL, USA
Contact:

Re: Golf Cart Motor overheating

Postby Bill Edmundson » Sat Mar 26, 2011 1:37 pm

Bob

I don't know. But, my guess is that a golf cart motor rarily runs for 45 minutes. That is a fairly long run for most of use anyway.

Bill
Mini -Tug, KH Tahoe 19 & Bartender 24 - There can be no miracle recoveries without first screwing up.
Tahoe 19 Build

User avatar
treetall100
Posts: 227
Joined: Fri Nov 12, 2010 3:17 pm
Location: Ottawa, Ontario, Canada

Re: Golf Cart Motor overheating

Postby treetall100 » Sat Mar 26, 2011 2:58 pm

Hi Bob,

I'm building the Lo-Voltage as we speak and just picked up an 1993 EZ-Go golf cart. I can't really answer your question but this site may help:

http://www.buggiesgonewild.com/

I've been looking around the site and they are as informative as this Glen-L forum as they are with golf carts.

You'll need the year and make of the motor types and age of batteries etc..for them to give you an idea of what's going on.

Patrick
Patrick Morais
~ Lo Voltage ~
Ottawa, Ontario, Canada

slowpoke
Posts: 10
Joined: Tue Apr 07, 2009 1:52 pm

Re: Golf Cart Motor overheating

Postby slowpoke » Fri Feb 17, 2012 5:32 pm

The guys that race (very high speed) electric and also 2 stoke Radio Control boats use water to cool the motors / engines. Try some small diameter copper tube around the outside of the motor, one end is under water facing forward, the other exits behind. Some have the inlet behind the prop and exit above the water.

angelicalee8
Posts: 1
Joined: Thu Jul 26, 2012 11:08 am

Re: Golf Cart Motor overheating

Postby angelicalee8 » Thu Jul 26, 2012 11:11 am

slowpoke wrote:The guys that race (very high speed) electric and also 2 stoke Radio Control boats use water to cool the motors / engines. Try some small diameter copper tube around the outside of the motor, one end is under water facing forward, the other exits behind. Some have the inlet behind the prop and exit above the water.

+1... This seems like the best way to cool the motor so it does not get too hot. I will be sure to try this method out.
Angelica Lee - Interested to know which Las Vegas Shows are the best on Vegas Strip.

User avatar
Iggy
Posts: 1500
Joined: Thu Aug 20, 2009 2:00 pm
Location: Leduc (Edmonton), Alberta

Re: Golf Cart Motor overheating

Postby Iggy » Thu Jul 26, 2012 2:29 pm

My 3' remote controlled boat was water cooled around is tiny inboard gas engine. Basically I had a small diameter intake pipe that extended below the transom at the rear and a small outlet at the side of the hull.

I would be some 1/2" copper pipe inlet that wrapped around the motor would do the job. Is your battery also getting hot?
Ian (aka Iggy)
My Malahini Build

User avatar
fergal butler
Posts: 1292
Joined: Sun Sep 06, 2009 2:55 am
Location: Co.Dublin, Ireland.

Re: Golf Cart Motor overheating

Postby fergal butler » Thu Jul 26, 2012 2:51 pm

Here are some photos from a few post down "16' double cockpit mahogany inboard runabout-electric" https://picasaweb.google.com/lukecraymo ... feat=email It shows the cooling setup he built for his motor.

User avatar
Iggy
Posts: 1500
Joined: Thu Aug 20, 2009 2:00 pm
Location: Leduc (Edmonton), Alberta

Re: Golf Cart Motor overheating

Postby Iggy » Thu Jul 26, 2012 3:48 pm

Here is the photo Fergal was referring to:

Image
Ian (aka Iggy)
My Malahini Build

khundley
Posts: 251
Joined: Fri Aug 13, 2010 11:12 am
Location: Wilmette, IL (Just outside Chicago)
Contact:

Re: Golf Cart Motor overheating

Postby khundley » Thu Jul 26, 2012 8:51 pm

I recently read where someone used square tube bent around the motor, maybe the same post Fergal referred to....that might help get better heat transfer than a round coil. jUst a thought.
Ken Hundley
http://www.nocturnalguitars.com

So, my big brother was playing guitar and I figured I'd try it too.
- Stevie Ray Vaughan

User avatar
TUGMYWAY
Posts: 389
Joined: Sun May 22, 2011 1:44 pm
Location: Glendale,AZ
Contact:

Re: Golf Cart Motor overheating

Postby TUGMYWAY » Thu Jul 26, 2012 10:27 pm

Put the water pickup be hind the prop. Free water pump! Take a look into the RC model boat building . Lots of stuff their.

lraymond
Posts: 28
Joined: Wed Aug 25, 2010 5:24 am
Location: Ann Arbor, MI

Re: Golf Cart Motor overheating

Postby lraymond » Fri Aug 03, 2012 10:00 pm

This is Luke, building the electric planing boat. I finished attaching the copper to the motor and will post some pics soon. Good contact is definitely going to be important I think...I tried this method on a golf cart motor on a lawn mower years back and didn't get much cooling due to the round pipe/poor contact. We'll see if this method works better. One issue might be that only the armature will be cooled directly by the jacket but the rotor will still be primarily air cooled. I don't think it will hurt though...

lraymond
Posts: 28
Joined: Wed Aug 25, 2010 5:24 am
Location: Ann Arbor, MI

Re: Golf Cart Motor overheating

Postby lraymond » Fri Aug 03, 2012 10:15 pm

Also ev builders sometimes use a blower to force air through the motor by placing a custom band around the inlet ports with great results. Not sure if your blower is currently blowing air through or simply around the motor. If your motor has separate inlet and outlet ports for air like mine this might work well and be simpler.

Trackhappy
Posts: 1411
Joined: Wed Feb 17, 2010 5:42 pm
Location: Sunshine Coast, Queensland, Australia. Building Gentry.

Re: Golf Cart Motor overheating

Postby Trackhappy » Sat Aug 04, 2012 12:10 am

A couple comments... if the motor is fully sealed as they commonly are, you may be able to cut ventilation holes in the end plates and use a small fan for forced internal ventilation. Also make sure you use softened copper pipe so it flattens a little ging more contact area (maybe even "persude it a little", and use some electronics thermal transfer paste before you wrap it around. Also, at displacement speeds you possibly won't get much water through a small diameter copper pipe so I'd get a small electric pump to run the water through. Low pressure high volume so centrifugal is probably best, like a windscreen washer pump but a bigger version maybe. If you can borrow or buy an infrared themometer you can do some tests as to how much temperature difference from inlet to outlet to see how you are doing as you change things.
All the best and keep us up to date.
By the time I have built a boat, I'll be ready to build a boat....

BoatG
Posts: 1
Joined: Fri Dec 18, 2015 9:54 am

Re: Golf Cart Motor overheating

Postby BoatG » Sat Dec 19, 2015 6:13 am

slowpoke wrote:The guys that race (very high speed) electric and also 2 stoke Radio Control boats use water to cool the motors / engines. Try some small diameter copper tube around the outside of the motor, one end is under water facing forward, the other exits behind. Some have the inlet behind the prop and exit above the water.


Do you not need any holes in the copper for the water to spray out? Can you post a pic of how this looks? I was thinking of using some automatic water pump but your way sounds simpler and better.
The best place to get phen375 is from this page https://skinnyexpress.com/phen375-review at the SkinnyExpress.com

User avatar
vupilot
Posts: 3306
Joined: Wed Apr 15, 2009 7:36 am
Location: Indy
Contact:

Re: Golf Cart Motor overheating

Postby vupilot » Sat Dec 19, 2015 11:19 am

Go about halfway down this thread. Youll see two types. A water jacket and a tubing type. Water doesn't actually come out of either onto the motor. It just wraps around the motor and cool water is always running through them simply against the motor can, pulling heat away from the motor.

http://www.rcgroups.com/forums/showthread.php?t=951092


Return to “Electric Power”

Who is online

Users browsing this forum: No registered users and 1 guest